EffectPads mod adds in Minecraft Pocket Edition 15 different types of plates that will give you different potion effects. To get any effect you will need to just be on the plate, with the result that you get a certain potion effect.

This is a great mod for use in the construction of maps, for example on each level of the map you can put these plates that will give certain effects to the player, with pomoho which he will be able to overcome some obstacles due to these effects.